Download SuperSU.zip here and save it to your phone’s SD cardDownload TWRP for Tecno boom J5 save it on tour computerextract the TWRP zip file and flash the recovery image to the phone using Sp flash download SP Flashtool here to flash the recovery

Boot the phone into TWRP recovery mode by Holding the Vol Up and Power button for 5 secondsIn TWRP recovery, Choose install zip from sdcard- to Choose zip from sdcard use vol up and down scroll up and down then choose the Supersu.zip file from your memory cardScroll to yes and install, after a successful flashing go back and reboot.

You are now rooted!GOTO Google Playstore and download root checker to verify your root status.

Full credit goto HOVATEK for creating this twrp recovery for tecno j5 boom